document.write( "Question 552094: The age of the father will be five times the age of his son in five years time. If the sum of their ages now is 80 years. Calculate the present age of the father. \n" ); document.write( "

Algebra.Com's Answer #360113 by JBarnum(2146) $\"\"$ $\"About$

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$\"f%2B5=5%28s%2B5%29\"$
\n" ); document.write( " $\"f%2Bs=80\"$
\n" ); document.write( ".
\n" ); document.write( " $\"80-s%2B5=5%28s%2B5%29\"$
\n" ); document.write( " $\"85-s=5s%2B25\"$
\n" ); document.write( " $\"60=6s\"$
\n" ); document.write( " $\"10=s\"$
\n" ); document.write( "
\n" ); document.write( ".
\n" ); document.write( "f=70
\n" ); document.write( "s=10
\n" ); document.write( ".
\n" ); document.write( "70+5=5(10+5)
\n" ); document.write( "75=75
\n" ); document.write( "70+10=80
\n" ); document.write( "80=80
\n" ); document.write( " \n" ); document.write( "

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